29. These five characters could turn your world upside down, but would you notice? 川 申 中 田 口

Answer: 

川  SEN, kawa - River

申  SHIN, mo(usu) - to say, be named

中  CHUU, naka - cente

田  DEN, ta - rice field

口  KOU, kuchi - mouth

If you turn the page they are written on upside down, they look the same!